发明名称 |
MINING METHOD FOR COMPLEX SEAMS HAVING GOB INTERLAYERS |
摘要 |
FIELD: mining, particularly underground flat-laying seam excavation with selective mineral excavation. ^ SUBSTANCE: method involves selectively excavating mineral in several cuts; controlling roof and arranging the cut rock interlayer in goaf; laying U-shaped boxes on seam ground so that the boxes are transversal to seam ground and are behind breakage face line, wherein the U-shaped boxes have surface opened towards seam roof; filling the boxes with gob from complex seam interlayers; laying pneumocylinder on the rock; supplying compressed air and compacting gob; unloading pneumocylinder; laying next U-shaped box on previously laid pneumocylinder, wherein the next box has dimensions exceeding that of previous one to create closed loop; supplying compressed air in pneumocylinder to expand U-shaped boxes between seam roof and ground; laying wooden washers on lower U-shaped box flanges along pneumocylinder sides, wherein wooden washers have heights exceeding that of deflated pneumocylinders; unloading and removing pneumocylinders after roof rock lowering so that upper box touches wooden washers. ^ EFFECT: decreased mineral losses and increased roof control efficiency. ^ 8 dwg |
申请公布号 |
RU2309251(C1) |
申请公布日期 |
2007.10.27 |
申请号 |
RU20060119132 |
申请日期 |
2006.05.31 |
申请人 |
GOSUDARSTVENNOE OBRAZOVATEL'NOE UCHREZHDENIE VYSSHEGO PROFESSIONAL'NOGO OBRAZOVANIJA "SANKT-PETERBURGSKIJ GOSUDARSTVENNYJ GORNYJ INSTITUT IMENI G.V. PLEKHANOVA (TEKHNICHESKIJ UNIVERSITET)" RF |
发明人 |
OVCHARENKO GRIGORIJ VASIL'EVICH;PETRAKOV DMITRIJ GENNAD'EVICH |
分类号 |
E21C41/16 |
主分类号 |
E21C41/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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